Counting-relay operation



1,650,745 I I F. A. STEARN COUNTING RELAY OPERATION Filed July 6. 1925 2 Sheets-Sheet l 1.2.3. 45. 615,9. I0.H.4 mm. 14.:5.

Nov. 29, 1927.

1,650,745 F. A. STEARN' COUNTING RELAY OPERATION Filed July 6. 1925 2 Sheets-Sheet 2 1 interruptions have beentransmitted from the subscribers station 100 to the register switches 180 of the sender in amanner described for the setting of the registers disclosed in Fig. 8 or 9 0i Patent 1,395,977 andthat the register relays such as shown in Fig. 10 of this patent have been operated in accordance with .a translation through the impulser and translator shown in Fig. 11 of 5 this patent. Register 250 shown in Fig. f

thisdisclosure illustrates diagrammatically the register relays such as shown in Fig. 10

of Patent 1,395,977, with the exception of relay 205 which. is shown associated with the counting'relays of Patent 1,413,501 to .F. A. Stearn.

Contacts-206 to 210 may be any type of register contact associated with relays or a switch; Assuming that the contact 208. is

established andth'at above 5 relay 205 is in an operated position, the terminating relays "200 and 201 are'interpolated in the train of counting relays "upon the second operation of the N0. 1 counting relay and responsive to the seventh operation and release of step- {ping relay 242. I I

U on the establishment of the fundamental circuit in the incoming selector switch 125, battery is associated with con ductor 113 through a selector switch relay "that controls the selective movement of the switch and ground is associated with conductor 11 1- which establishes a circuit through the contact of sequence switch cam 225, windingszof relays 241 and 242 and upper contact offcount-ing relay 200. v The operation of the selector switch such as 125 is found in the above mentioned Patent 1,395,977 to cause the intermittent operation and release of stepping relay 2 12 as the brushes of the selector switch "commutator move upwardly over the segments of sard commutaton L IRelay'242 receives its 1n1t1al energization upon the establishment ofethe fundamental circuit. A ground is thus associated through its contact, upper, contacts of counting relays 3, 2', '1 and 0,, winding of the 0 countin .relay to battery, to cause the operation .of the 0 counting relay. The operationof i thev0 relay establishes alockingcircuit for itseltand an operatingcircuit for the 0 counting relay which isefl'ected upon the release ot relay 2 12 which maintains a'shunt a 'aroundthewinding of the 0' counting relay duringjtsoperation. The operating circuit for 0 counting relay may be traced from ,groundth'rough' the contact of sequence switch cam 220, lower contact of the No. 1 counting relay, upper contact of the 0 counting relay, winding of 0' counting relay, Winding of 0 counting relay to battery.

The opcrationiof the 0 counting :relay establish-es an energizing circuit for relay 202 from battery, through its winding, normal contact of ielay 203, lower contact ofthe 0' counting relay to ground through the contact of sequence switch cam 220. Theoperation otuelay 202 establishes a locking circuit for itself and an operating circuit for relay 203 which is effective upon the release of the 0 counting relay. Until such time as the 0" counting relay is released, an obvious shunt ground circuit is maintained around the winding of relay .203.

The second operation of relay 242 establishes a circuit'to operatethe No. l'counting relay from battery through its winding, upper alternate contact of the 0 counting relay, upper normal contacts of counting relays 1, 2 and 3 to ground through the contact of relay 242. The 0 erat'ion of the No. 1 counting relay establis es a locking .circuit for itself and an operating circuit for counting relay 1 which is effective uponthe subsequent release of relay 242. This circuit is similar to the circuit traced for the O counting relay excepting that it is carried through the lower contact of the 2 counting relay. Upon the operation of the 1 counting relay, ground is removed from the locking circuit for the 0 and 0 counting relays to-cause their release. The release of the 0 counting'relay removes the shunt around the winding ofrelay 203 causing its operation in series with relay 202. A subsequent operation of relay 242 establishes a circuit to operate the No; 2 counting relay which circuit may be traced from ground through contact of relay 242, up er normal contact of counting relays 3 an 2, up or alternate contactof the l counting re ay, winding of the No. 2 counting relay to battery. The operation of the No. 2 countin relay establishes a lockin circuit for itsel? and a'n opcrating circuit tor the .2 counting relay which is effective upon a subsequent release of stepping relay 242. The operation of the 2' counting relay removes ground from the locking circuit for the No. 1 and No. '1 counting relays to cause their release. The No. land No. 3 counting relays are crated in the same manner as described or the Nos. 2 and 2 counting relays. Upon'a subsequent operation of stepping relay 242 a circuitis established to energize the winding of the No. 4 counting relay. This circuit may be traced from ground through the contact of rclay242, upper normal contact of the 1 counting relay, lower inside contact ottlie 3 counting relay, upper outside contact of relay 204, winding of the No, 4 counting relay to battery. The operation of the No. i counting relay establishes a locking circuit for itself and an operating cirrelay 242, upper cuit for the a counting relay which is effective upon the release of stepping relay 242. The operation of the No.4 counting relay releases the Nos. 3 and?! counting relay in the same manner as described for preceding counting relays. it will be noted that the locking circuit for the No. 4 and No. i counting relay is not established through the contact of any other counting relay and therefore they remain locked until the sequence switch changes its position.

Since the second operation of the No. 1 counting relay has been assumed for coop.- eration with the setting of the register spring 208 a circuit may be traced for the second operation of the No. 0 and No. 0 countim relays which now take the place of a No. 5 and No. 5"counting relay. The circuit for the reoperation ot' the O counting relay is established upon an operation of stepping relay 2 .2 subsequent to the operation for the No. t counting relay and may be traced from ground through the contact of alternate contact of the No.

4 counting relay, upper normal contacts of the 3', 2, 1 and O counting relays, winding of the l lo. Ocounting relay to battery. The operationof the No. 0 counting relay establishes an operating circuit for the 0 counting relay which is effective upon the release o1 stepping relay 2&2 in the same manner as previously described.

The reoperation of the 0 counting relay establishes an operating circuit for relay which may be traced from battery through its winding, alternate contact of relay 203, lower contact of the 0 counting relay to ground through the contact; of sequence switch cam 220 The operation of relay20-l establishes a locking circuittor itself and further establishes a circuit for the operation of the terminating relay 201 when the digit to be recorded is nine. Theoperation of relay 204 further establishes through its lowermost contact a path to ground for the reoperating circuit of counting relay 3.

Upon the operation of the 0 counting relay a circuit is established -for the reoperat-ion oi the No.1 counting relay. The energizing circuit .EOlillG No. l counting relay is established from ground through the contacts of stepping relay 2&2, upper alternate contact of the at counting relay,upper normal contacts of the 3, 2 and 1f counting relays, upper alternate contact of the 0 counting relay, winding of the No; 1 counting relay to battery. Since contact 208 is closed a circuit is also established from the operated ground for the No.1 counting relay through the apparatus of the sender and register 250, contact 208 contact of sequence switch cam 221, 222 or 223 in accordance with the selection made, lower inside conincoming 7 selection.

tactof the 4 countingrelay, winding of terminating relay 201 to battery. The op eration of the No. 1 counting relay establishes. a locking circuit for itself and an. op erating circuit for the No. 1 counting relay. The operation of terminating relay 201 establishes a locking circuit for itself and an operating circuit for the prime terminating relay 200. The operating circuits for the No. 1 relay and relay 200 are effective upon the release of relay 2&2. The operation of the No. 1 countingrelayis not eiiected at this. time.

The operation opens the fundamentalcircuit at its upper contact to arrest the upward movement of theselector switchelevator. The operation of relay 200 further establishes a circuit to energize the sequence switch magnet 240 from ground, through its lower alternate contact, right lower contact of sequence switch cam 226,'winding. oi magnet 2&0 to battery. The sequence switch is thus rotated from an even numbered positionin which it is resting toanodd numbered position where its movement- 18 arrested awaitlngthe otterminating relay 200 i release of the terminating relay 200, The

rotation oi the sequence switch opens the locking ground for the counting relays including the terminating relays at the contact of sequence switch cam 220. The release of terminating relay 200 establishes a circuit to again energize the sequence switchmagnet 2&0 from ground through its lower contact,v

left contact of earn 226, winding of magnet 2&0 to battery. The sequence switch now.

rotates to an even numberedposition where the fundamental circuit is again established through the contact'oif sequence switch cam On!" 1 14,50

upper contact of relay 200 and other apparatus of the sender;

The register coininations for incoming selector brush and group selection, final brush, tens and units selections. For each of the above sclections the sequence switch 260 is in an even numbered position and the conductors 230 to 234 are associated with the proper register contacts for the directive control of a selector switch, Assuming that the selection hereinbetore described was made for 250has a plurality of register group selection with the sequence i switch in position i and that the sequence 7 switch rotated from positions 4 to- 6 upon the completion of this selection, the linal selector is now directively controlled for brush Conductor 232 associated with the right contactof cam 222 is connected to register contacts the same as 206 to 210, one of which has been closed for this selection.

The linal brush selection is ordinarilycontrolled with less than five digitsand therefore therelay 205 is not operated so that the terminating relays maybe interpolated I at some point in the train of counting rethe first or second lays upon their first operation. It will be noted .thatavith relay 205 in its normal position the operating path for relay 201 is from :batterythrough its winding, left. contact of relay 205, one of the contacts associatedavith sequence switch cams .221, 222 or 223, through a register contact such as one .of contacts .206 to 210, upper contacts or" the prime-counting relays to ground through the contact of stepping relay 24-2.

Let it be assumed that the digit number to be recorded is nine. To record this digit the relay 205 is operated. It will be remembered that upon the first progressive operation'lof .the counting relays, the 4 and l relays remain locked. Therefore, upon the next progressive operation of the counting relays azcircuit path is established for the interpolation of the terminating relays for digit N0. gzthrough the register contact #206. This circuit may be traced from battery, through the winding of relay 201, lower inside contact ofthe 4 counting relay, a contact of sequence switch cam 221, or 2:23, register contact206 ora similar contact of other register units, upper inside contact of relay upperalternate contact of the 3 countingrelay to ground through the contact of stepping relay 242.

Itis apparcntnfrom the above description that-digits from O to 9 may be recorded on the relays disclosed and that the terminating relays maybe interpolated at any point in progressive operation of such counting relays.

' What is claimed is: g

1. In a telephone system, a train of relays,

means to successively operate said relays,

another relay,and means to interpolate said other relayat any point in said train, said first means causing the operation of said second relay'to terminate the operation of the relays of said trainat the point of said interpolation. v V

I 2. In a telephone system, a train of counting relays, means to successively operate said relays, a single set of counting relays, and means to interpolate said single set at any point in'the train, said first means causing the operation of said single set of relays as the terminating counting relays of said train.

erate said relays, a separate set of counting relays, and means to interpolate said separate set at any point in said train.

4. In a teleph-onesystem, a train of'countr ing relays for recording digits comprising a less number of pairs of relays than the lug est digit to be recorded, means to operate said relays, aseparate set of counting relays, and means to interpolate said separate set at any. point of said train, said first means causing the operation of said separate set of relays as the terminating counting relays of said train.

5. In a system for controlling selective switches, a train of relays, means to progressively operate said relays in response to the movement of a switch, a terminating relay for controlling the extent of movement of a switch, and means to interpolate said terminating relay at any point in said train, said first means causing the operation of said terminating relay at the point of interpolation.

(5. In a system for controlling selective switches, a train of counting relays of a less number of pairs than the largest digit to be recorded by the movement of a switch, means to l'n'ogrcssively operate and reoperatc said relays in response to the movement of a switch, a terminating relay for controlling the extent of movement of a switch, and. means to interpolate said terminating relay any point in said train during the operation or reoperation of said train, said first means causing the operation of said terminating relay at the point of interpolation.

7. In a telephone system, a train of relays, means to successively operate said relays, a terminating relay, :1 variable operable register arranged to be set for controlling the operation of said terminating relay, and means to interpolate said terminating relay at a point in said train of relays in accordance with the setting of said register.

8. In a system for controlling. selective switches, a train of relays, means to progressively operate said relays in response to the movement of a. switch, a terminating relay for controlling the extent of movement of a switch, a variably operable register arranged to be set for directive control of selective switches, and means to interpolate said terminating relay at a point of said train determined by the setting of said register.

In witness whereof, I hereunto subscribe my name this day of June, A. D. .1925.

FRANKLIN A. SIEARN. 

